Khumting, T. ., and P. . Sookcharoen. “SPEECH ACTS USED IN SUICIDE NOTES”. Srinakharinwirot Research and Development Journal of Humanities and Social Sciences, vol. 14, no. 27, January-June, Dec. 2022, pp. 62-74, https://so04.tci-thaijo.org/index.php/swurd/article/view/259756.